backwash


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backwash

1. a sucking movement of water, such as that of retreating waves
2. water washed backwards by the motion of oars or other propelling devices
3. the backward flow of air set up by an aircraft's engines

backwash

[′bak‚wäsh]
(chemical engineering)
In an ion-exchange resin system, an upward flow of water through a resin bed that cleans and reclassifies the resin particles after exhaustion.
(oceanography)
Water or waves thrown back by an obstruction such as a ship or breakwater.
The seaward return of water after a rush of waves onto the beach foreshore.
References in periodicals archive ?
The risk for disease transmission is difficult to ascertain because most studies, including this one, have not measured viability of the parasites recovered from water or filter backwash.
The regeneration process should consist of an initial backwash step (about 6 gpm per square foot of cross section bed area), followed by brine introduction, slow rinse and fast rinse.
Assessment of auxiliary backwash method of rapid sand filters.
Andrew's son Adam, 13, saved his cousin Stuart, five, by grabbing his hand as the vicious backwash pulled him out to sea.
A rotating drum design combines with a powerful self-cleaning backwash system--but without the high maintenance and costs typical of traditional filtration methods.
INDIANAPOLIS - Erik Vendt dropped his time 20 seconds in the 1,500-meter freestyle and almost drowned in the backwash.
All three of our divisions -- Consumer Products, Engineered Systems and Community Water -- are utilizing the product in backwash filters, and we believe its future could become quite significant to Kinetico.
5 million gallon finished water storage tank, a new backwash holding tank and new finished water chemical feed facilities.
Invitation to Bid: Falkenburg advanced wastewater treatment plant backwash blowers
Featuring a permanent-media design, the Series 30 has a rotating drum combined with a powerful self-cleaning backwash system.
A filter backwash system can be supplied as a stand-alone package with integrated vacuum motor or as part of a central system.
Still, there was enough of that cultural backwash in it and sometimes I would find myself sitting there on the couch and looking over and thinking, `It's the Lone Ranger.